Red Hat Bugzilla – Bug 87475
Value of HZ has changed?
Last modified: 2007-04-18 12:52:29 EDT
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User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0)
Description of problem:
I beleive the same problem occurs with kernel-source-2.4.18-27.8.0, aswell.
Compiling my company's driver against the redhat kernel (as opposed to the
kernel 2.4.18) caused a subtle behavour change in the driver.
I have tracked the problem down to the kernel define "HZ" being set to '512' as
opposed to being '100' as in the kernel.org kernel.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. create minimal driver to prink out value of HZ
2. compile and load driver for stock redhat 8 kernel
3. compile and load driver for kernel.org 2.4.18 kernel
4. compare results
Actual Results: the kernel define "HZ" being set to '512'....
Expected Results: ...as opposed to being '100' as in the kernel.org kernel.
I'm not sure if this is a bug or intentional.
this is fully intentional; it helps interactive performance